Run results for: native find vs lodash _.find vs ramda

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36

Browser: Chrome 76

Operating system: Mac OS X 10.13.4

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
array find	6634277.0 Ops/sec
_.find	1684900.0 Ops/sec
R.find	529960.9 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.js"></script>

Script Preparation code:

var users = [
  { 'user': 'joey',  'age': 32 },
  { 'user': 'ross',    'age': 41 },
  { 'user': 'chandler', 'age': 39 }
]

Tests:

array find
// Native users.find(function (o) { return o.age < 40; })
_.find
_.find(users, function (o) { return o.age < 40; })
R.find
R.find(R.propSatisfies(R.lt(40), 'age'), users)

Run results for: native find vs lodash _.find vs ramda

Compare the new ES6 spread operator with the traditional concat() method

array find

_.find

R.find